diff --git a/stable/prometheus-operator/Chart.yaml b/stable/prometheus-operator/Chart.yaml
index 1ac17f6770..424f00b8e1 100644
--- a/stable/prometheus-operator/Chart.yaml
+++ b/stable/prometheus-operator/Chart.yaml
@@ -9,7 +9,7 @@ name: prometheus-operator
 sources:
   - https://github.com/coreos/prometheus-operator
   - https://coreos.com/operators/prometheus
-version: 5.0.7
+version: 5.0.8
 appVersion: 0.29.0
 home: https://github.com/coreos/prometheus-operator
 keywords:
diff --git a/stable/prometheus-operator/README.md b/stable/prometheus-operator/README.md
index c7e159e522..b954afdbd1 100644
--- a/stable/prometheus-operator/README.md
+++ b/stable/prometheus-operator/README.md
@@ -302,6 +302,7 @@ The following tables list the configurable parameters of the prometheus-operator
 | `grafana.sidecar.dashboards.enabled` | Enable the Grafana sidecar to automatically load dashboards with a label `{{ grafana.sidecar.dashboards.label }}=1` | `true` |
 | `grafana.sidecar.dashboards.label` | If the sidecar is enabled, configmaps with this label will be loaded into Grafana as dashboards | `grafana_dashboard` |
 | `grafana.sidecar.datasources.enabled` | Enable the Grafana sidecar to automatically load dashboards with a label `{{ grafana.sidecar.datasources.label }}=1` | `true` |
+| `grafana.sidecar.datasources.defaultDatasourceEnabled` | Enable Grafana `Prometheus` default datasource` | `true` |
 | `grafana.sidecar.datasources.label` | If the sidecar is enabled, configmaps with this label will be loaded into Grafana as datasources configurations | `grafana_datasource` |
 | `grafana.rbac.pspUseAppArmor` | Enforce AppArmor in created PodSecurityPolicy (requires rbac.pspEnabled) | `true` |
 | `grafana.extraConfigmapMounts` | Additional grafana server configMap volume mounts | `[]` |
diff --git a/stable/prometheus-operator/ci/test-values.yaml b/stable/prometheus-operator/ci/test-values.yaml
index 67ca2bc38d..84d3090c86 100644
--- a/stable/prometheus-operator/ci/test-values.yaml
+++ b/stable/prometheus-operator/ci/test-values.yaml
@@ -360,6 +360,7 @@ grafana:
       label: grafana_dashboard
     datasources:
       enabled: true
+      defaultDatasourceEnabled: true
       label: grafana_datasource
 
   extraConfigmapMounts: []
diff --git a/stable/prometheus-operator/templates/grafana/configmaps-datasources.yaml b/stable/prometheus-operator/templates/grafana/configmaps-datasources.yaml
index 8c1c351d47..ca19d0e3c3 100644
--- a/stable/prometheus-operator/templates/grafana/configmaps-datasources.yaml
+++ b/stable/prometheus-operator/templates/grafana/configmaps-datasources.yaml
@@ -11,11 +11,13 @@ data:
   datasource.yaml: |-
     apiVersion: 1
     datasources:
+{{- if .Values.grafana.sidecar.datasources.defaultDatasourceEnabled }}
     - name: Prometheus
       type: prometheus
       url: http://{{ template "prometheus-operator.fullname" . }}-prometheus:9090/{{ trimPrefix "/" .Values.prometheus.prometheusSpec.routePrefix }}
       access: proxy
       isDefault: true
+{{- end }}
 {{- if .Values.grafana.additionalDataSources }}
 {{ toYaml .Values.grafana.additionalDataSources | indent 4}}
 {{- end }}
diff --git a/stable/prometheus-operator/values.yaml b/stable/prometheus-operator/values.yaml
index 114b01682a..2c97998e71 100644
--- a/stable/prometheus-operator/values.yaml
+++ b/stable/prometheus-operator/values.yaml
@@ -360,6 +360,7 @@ grafana:
       label: grafana_dashboard
     datasources:
       enabled: true
+      defaultDatasourceEnabled: true
       label: grafana_datasource
 
   extraConfigmapMounts: []